Rumohra RADDI, 1819

Teodoridis, Vasilis, Kvaček, Zlatko, Radoň, Miroslav, Raprich, Vladislav & Bruch, Angela A., 2020, A New Oligocene Flora From Ludvíkovice Near Děčín (České Středohoří Mts., The Czech Republic), Fossil Imprint 76 (2), pp. 297-314 : 300-301

Genus Rumohra RADDI, 1819

Rumohra recentior (UNGER) BARTHEL, 1976 Pl. 1, Figs 1–4

1847 Sphenopteris recentior UNGER , p. 123, pl. 37, fig. 4.

1976 Rumohra recentior (UNGER) BARTHEL , p. 457, text-fig. 6a– d, pls 80, 81.

M a t e r i a l. Fragments and incomplete sterile fern fronds, impressions PA 1618, PA 1619, PA 1620, PA 1621– 28, PA 1625, NM-G 12803, NM-G 12804, NM-G 12806.

D e s c r i p t i o n. Incomplete sterile fern fronds, apex with a lateral pinna and a detached pinna, preserved length up to 100 mm, rachis strong, surface smooth, pinna almost perpendicular, pinnules ovate, slightly asymmetrical, deeply irregularly dentate, up to 15 mm long and 5 mm wide, segments broadly attached, admedially oriented, shallowly dissected, secondary veins alternate, 3 times forked, the lowermost admedially reaching the margin.

R e m a r k s. These fragments are up to now the first records of this fern in the Oligocene of the České středohoří Mts. and Saxony. From the Palaeogene of North Bohemia, it is only known from the Doupovské hory Mts., the locality Valeč ( Bůžek et al. 1990) and from the České středohoří Mts., localities Kučlín ( Kvaček and Teodoridis 2011) and Holý Kluk ( Radoň et al. 2006). The new finds from Ludvíkovice morphologically fully correspond to the above mentioned material from the Czech Republic. For more detailed analysis of morphology and affinities see Barthel (1976).